package com.arithmeticEveryDay.blueBridge;

import java.util.Scanner;

public class Main5891 {

    public static void main(String[] args) {
        int mod = 998244353;
        Scanner scan = new Scanner(System.in);
        long l = scan.nextLong() % mod;
        long r = scan.nextLong() % mod;
        for (long i = l; i <= r; i++) {
            if (i % 10 == 0) {
                continue;
            }
        }
        
        
    }

}
